When we see dazzling lightning, we know that tremendous amount of electricity is present in it. This kind of energy is used to empower the industrial world and transforming society. It is involved in everything that we do, used in light sources such as lamps and working machines such as computers. It is used as an energy source for refrigeration, air conditioning and telecommunications. Electricity has been a phenomenon pondered upon by intellectuals since the 1600. With increasing demand for this energy source, public electricity suppliers are becoming a fixture in any developed or developing society.Transistors came along with the discovery of electricity. It is a semi-conductor device connected to terminals that are attached to an external circuit. They can be used either as switch or as amplifier of voltage. Types of said device include bipolar junction and field-effect transistor. The device is used to amplify less power from external circuit.  It was Julius Edgar Lilienfield who first patented the device in 1925, but was unable to popularize the concept as he did not publish anything concerning its research. A series of scientists worked on the progress of its realization. Finally in 1954, Gordon Teal who worked at Bell Labs produced the first silicon transistor. It was a term coined by John R. Pierce.

With such invention, modern electronic devices are now available for use. We owe cheaper and smaller radios and computers from this contraption, revolutionizing the field of electronics. Other advantage of using transistors—aside from its portability—is that it is insensitive to mechanical shock and vibration and usually lasts for extremely long periods.

The device however, also has disadvantages. For example, it cannot operate at voltages higher than 1,000 volts. Operations involving high frequency such as over-the-air television broadcasting are better achieved through vacuum tubes.